A Seroepidemiological Study on Varicella

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  • 水痘に関する血清疫学的調査研究
  • スイトウ ニ カンスル ケッセイ エキガクテキ チョウサ ケンキュウ

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Abstract

Sera of 802 children, aged 0 to 10 years, were collected at kawasaki city and the suburb during a period from 1978 to 1985, and neutralizing (NT) antibodies to varicella virus were examined for seroepidemiological study. The data obtained were analysed in age distribution, and in annual fluctuation.<BR>The results were as follows:<BR>1) The positive rates of NT antibodies showed a tendency to increase with age, during the eight years, and it had been revealed that the rates in the groups of 0-3, 4-6 and 7-10 years old were 49.0, 70.8 and 88.8% respectively.<BR>2) The positive rates of the groups, aged 3 to 6 years, showed higher in 1979 and 1983. The rates of the group, furthermore, in 1983 was significantly higher than those in other years, and a relationship between the high rates of NT antibodies in the groups and a number of varicella contraction was observed.<BR>3) Persistent period of maternal NT antibodies of infants was approximately 6 or 7 months.<BR>4) A maximum rate of varicella contraction was recognized in the groups of 5 years old, and it was considered that the most of all children might be primarily infected with varicella virus until 6-7years old.<BR>5) An inapparent infection rate of varicella in the groups of 1-3, 4-6 and 7-10 years were 48.3, 58.7 nad 61.6% respectively.

Journal

  • Kansenshogaku Zasshi

    Kansenshogaku Zasshi 61 (7), 783-788, 1987

    The Japanese Association for Infectious Diseases

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